Thymus activity decreases with age but this doesn’t affect aging individuals unless they are ____
a. going through menopause
b. suffering from a thyroid disorder
c. over 60
d. suffering from cancer
e. infected by HIV
ANSWER: e
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Fishing populations to low levels can cause a species to
a. relocate to distant locations. b. migrate out of the area. c. switch their prey items. d. become ecologically extinct. e. increase its reproductive rate.
Meiosis is to gametes as fertilization is to
A. mitosis. B. sperm. C. egg. D. zygote. E. chromosome.
In cellular respiration, which molecule is released after the citric acid cycle?
A) oxygen B) carbon dioxide C) water D) glucose
Classification. Respond to the following statements in reference to the four kinds of receptors listed below.
A. Receptors on the tongue detect variations in this kind of signal. B. Ears detect this kind of energy. C. The warmth you feel from a campfire detected by this receptor. D. Receptors that detect tissue damage.